CN205725460U - A kind of half-bridge converter inputting Parallel opertation parallel connection and sharing control system thereof - Google Patents
A kind of half-bridge converter inputting Parallel opertation parallel connection and sharing control system thereof Download PDFInfo
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- CN205725460U CN205725460U CN201620224358.7U CN201620224358U CN205725460U CN 205725460 U CN205725460 U CN 205725460U CN 201620224358 U CN201620224358 U CN 201620224358U CN 205725460 U CN205725460 U CN 205725460U
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Abstract
This utility model provides a kind of half-bridge converter inputting Parallel opertation parallel connection and sharing control system thereof, and this changer includes power supply (1), electric capacity brachium pontis (2), switching tube brachium pontis (3), transformer module (4), commutation diode module (5), filter inductance module (6), filter capacitor module (7) and load (8)；Described power supply (1), electric capacity brachium pontis (2), switching tube brachium pontis (3), transformer module (4), commutation diode module (5), filter inductance module (6), filter capacitor module (7) and load (8) are sequentially connected；The current inner loop that the output of Voltage loop is modules provides a common reference current, i.e. achieves outputting inductance electric current current-sharing, also improves the dynamic property of system.
Description
Technical field
This utility model belongs to power equipment and control field, particularly relates to a kind of input Parallel opertation half-bridge converter in parallel, sharing control system.
Background technology
In single inverter power supply power-supply service big in the face of input and output pulsation of current, the voltage stress of power device is high, and loss is big, changer electromagnetic interference and the problem such as expensive.Input parallel outputs parallel connection converter is applicable to the big current low voltage of requirement, the power-supply system such as safe and reliable.But existing frequently-used two-transistor forward converter and full-bridge converter carry out inputting Parallel opertation parallel combination, need more switching tube, and need to add multipair input equalizing capacitance brachium pontis in both topological structure；Owing to modules device parameters there are differences, the power that its result necessarily causes modules to bear is unbalanced, controls process complicated, relatively costly.
Utility model content
The technical problems to be solved in the utility model is: for big current low voltage, the demand of the power-supply system such as safe and reliable, proposes a kind of to input the half-bridge converter that Parallel opertation is in parallel, effectively reduces the current stress of power device, improve the reliability of power-supply system.
A kind of half-bridge converter inputting Parallel opertation parallel connection, including power supply 1, electric capacity brachium pontis 2, switching tube brachium pontis 3, transformer module 4, commutation diode module 5, filter inductance module 6, filter capacitor module 7 and load 8；
Described power supply 1, electric capacity brachium pontis 2, switching tube brachium pontis 3, transformer module 4, commutation diode module 5, filter inductance module 6, filter capacitor module 7 and load 8 are sequentially connected；
Described electric capacity brachium pontis includes two electric capacity connected, the first electric capacity C1With the second electric capacity C2, electric capacity brachium pontis is parallel to the two ends of power supply 1；
Described switching tube brachium pontis includes three groups of switching tube unit being connected in parallel on electric capacity brachium pontis two ends, the respectively first switching tube unit, second switch pipe unit and the 3rd switching tube unit, and often group switching tube unit includes two switching tubes connected；
Described transformer module includes three transformators, and in an input of each transformator and a switching tube unit, the series connection point of the switching tube of two series connection is connected, and another input of transformator is connected with the series connection point of the electric capacity of two series connection in electric capacity brachium pontis；
Described filter inductance module includes three filter inductances；
Described commutation diode module includes three groups of commutation diode unit, often group commutation diode unit includes two commutation diodes, the positive pole of two diodes is connected with two outfans of a transformator respectively, and the negative pole of two diodes is all connected with a filter inductance；
Described filter capacitor module includes the filter capacitor C of series connectionfWith filter resistance Rc, the two ends of described filter capacitor module are parallel between the secondary midpoint of each transformator in described transformer module and described filter inductance；
Described load is parallel to the two ends of described filter capacitor module.
One switching tube unit, a transformator, a commutation diode unit and an elementary cell of a filter inductance formation half-bridge converter, the input of three elementary cells and outfan all use and are connected in parallel.
Described switching tube is metal-oxide-semiconductor.
A kind of sharing control system inputting Parallel opertation half-bridge converter in parallel, including voltage control loop, current regulator, PWM signal generator and drive circuit；
Described voltage control loop, current regulator, PWM signal generator and drive circuit are sequentially connected；
Described current regulator includes three sub-current regulators, and described PWM signal generator includes three sub-PWM signal generator, and described drive circuit includes three sub-drive circuits；
The reference voltage input terminal of the outfan of described voltage control loop and three sub-current regulators is connected；
Each electron current controls the outfan of ring and is connected with a sub-PWM signal generator and a sub-drive circuit successively；
Described sub-drive circuit drives a switching tube unit in above-mentioned a kind of switching tube brachium pontis inputted in the half-bridge converter that Parallel opertation is in parallel；
The input of described voltage control loop is connected with the voltage output end in above-mentioned a kind of load inputted in the half-bridge converter that Parallel opertation is in parallel.
Utilizing above-mentioned sharing control system, input Parallel opertation parallel connection half-bridge converter is carried out sharing control, detailed process is as follows:
Input Parallel opertation parallel connection half-bridge converter is utilized to export the input signal as voltage control loop of the voltage in load, voltage control loop is on the basis of the reference voltage set, after input signal being amplified, the signal of output is separately input to the negative input end of operational amplifier in three sub-current regulators as the positive input terminal reference signal of the operational amplifier of three sub-current regulators, the most filtered device of electric current and the resistance of the output of each filter inductance；
Each electron current controls ring and a sub-PWM signal generator is connected, and each electron current controls a signal input signal as sub-PWM signal generator of ring output, and another input signal of sub-PWM signal generator is triangular signal；
The output signal of every sub-PWM signal generator drives a switching tube unit as the input signal of a sub-drive circuit, every sub-drive circuit.
In described switching tube brachium pontis in three switching tube unit in parallel, the working cycle of second switch pipe unit breaker in middle pipe, the working cycle of the 3rd switching tube unit breaker in middle pipe was corresponding to delayed 1/6 switch periods of switching tube in second switch pipe unit corresponding to switching tube delayed 1/6 switch periods in the first switching tube unit.
Beneficial effect
The utility model proposes a kind of half-bridge converter inputting Parallel opertation parallel connection and sharing control system thereof, in this topological structure, each module can share a pair electric capacity brachium pontis, this electric capacity brachium pontis also can be as input equalizing capacitance, without separately adding input equalizing capacitance, decrease the quantity of electric capacity, simple in construction in main circuit.The current-sharing control method used, can realize the power equalization that modules bears.The current inner loop that the output of Voltage loop is modules provides a common reference current, uses this Average Current Control method, i.e. achieves outputting inductance electric current current-sharing, also improve the dynamic property of system.Have employed Interleaved control technology, Interleaved control technology can reduce output electric current, voltage ripple, reduces input and output filter inductance, electric capacity volume simultaneously, improves the dynamic property of whole system.
This changer meets big current low voltage, the demand of the power-supply system such as safe and reliable；The equilibrium of each modular power can be realized；Voltage stress and the current stress of cpable of lowering power device are low, easily select power device；The reliability of whole system can be improved by introducing certain redundant module；The deck power converter module of standard can reduce production cost and development time；The power that each module undertakes is relatively low, it is simple to individual module design and the thermal design of system；Power model recombinant can meet the requirement of multiple input-output power grade easily.
Accompanying drawing explanation
Fig. 1 is the structural representation of changer described in the utility model；
Fig. 2 is that the conducting of each switching tube using Interleaved control technology in control method described in the utility model turns off schematic diagram.
Detailed description of the invention
Below in conjunction with drawings and Examples, this utility model is described further.
The half-bridge converter that Parallel opertation is in parallel is inputted, including power supply 1, electric capacity brachium pontis 2, switching tube brachium pontis 3, transformer module 4, commutation diode module 5, filter inductance module 6, filter capacitor module 7 and load 8 as it is shown in figure 1, a kind of；
Described power supply 1, electric capacity brachium pontis 2, switching tube brachium pontis 3, transformer module 4, commutation diode module 5, filter inductance module 6, filter capacitor module 7 and load 8 are sequentially connected；
Power supply 1 is provided by alternating current 220V power supply；Electric capacity brachium pontis 2 selects nonpolarity polypropylene capactive；Switching tube brachium pontis 3 selects the MOSFET of international rectification company；
Described electric capacity brachium pontis includes two electric capacity connected, the first electric capacity C1With the second electric capacity C2, electric capacity brachium pontis is parallel to the two ends of power supply 1；
Described switching tube brachium pontis includes three groups of switching tube unit being connected in parallel on electric capacity brachium pontis two ends, the respectively first switching tube unit, second switch pipe unit and the 3rd switching tube unit, and often group switching tube unit includes two switching tubes connected；
Described transformer module includes three transformators, and in an input of each transformator and a switching tube unit, the series connection point of the switching tube of two series connection is connected, and another input of transformator is connected with the series connection point of the electric capacity of two series connection in electric capacity brachium pontis；
Described filter inductance module includes three filter inductances；
Described commutation diode module includes three groups of commutation diode unit, often group commutation diode unit includes two commutation diodes, the positive pole of two diodes is connected with two outfans of a transformator respectively, and the negative pole of two diodes is all connected with a filter inductance；
Described filter capacitor module includes the filter capacitor C of series connectionfWith filter resistance Rc, the two ends of described filter capacitor module are parallel between the secondary midpoint of each transformator in described transformer module and described filter inductance；
Described load is parallel to the two ends of described filter capacitor module.
One switching tube unit, a transformator, a commutation diode unit and an elementary cell of a filter inductance formation half-bridge converter, the input of three elementary cells and outfan all use and are connected in parallel.
Described switching tube is metal-oxide-semiconductor.
A kind of sharing control system inputting Parallel opertation half-bridge converter in parallel, including voltage control loop, current regulator, PWM signal generator and drive circuit；
Described voltage control loop, current regulator, PWM signal generator and drive circuit are sequentially connected；
Described current regulator includes three sub-current regulators, and described PWM signal generator includes three sub-PWM signal generator, and described drive circuit includes three sub-drive circuits；
The reference voltage input terminal of the outfan of described voltage control loop and three sub-current regulators is connected；
Each electron current controls the outfan of ring and is connected with a sub-PWM signal generator and a sub-drive circuit successively；
Described sub-drive circuit drives a switching tube unit in above-mentioned a kind of switching tube brachium pontis inputted in the half-bridge converter that Parallel opertation is in parallel；
The input of described voltage control loop is connected with the voltage output end in above-mentioned a kind of load inputted in the half-bridge converter that Parallel opertation is in parallel.
Utilizing above-mentioned sharing control system, input Parallel opertation parallel connection half-bridge converter is carried out sharing control, detailed process is as follows:
Input Parallel opertation parallel connection half-bridge converter is utilized to export the input signal as voltage control loop of the voltage in load, voltage control loop is on the basis of the reference voltage set, after input signal being amplified, the signal of output is separately input to the negative input end of operational amplifier in three sub-current regulators as the positive input terminal reference signal of the operational amplifier of three sub-current regulators, the most filtered device of electric current and the resistance of the output of each filter inductance；
Each electron current controls ring and a sub-PWM signal generator is connected, and each electron current controls a signal input signal as sub-PWM signal generator of ring output, and another input signal of sub-PWM signal generator is triangular signal；
The output signal of every sub-PWM signal generator drives a switching tube unit as the input signal of a sub-drive circuit, every sub-drive circuit.
As shown in Figure 2, in described switching tube brachium pontis in three switching tube unit in parallel, the working cycle of second switch pipe unit breaker in middle pipe, the working cycle of the 3rd switching tube unit breaker in middle pipe was corresponding to delayed 1/6 switch periods of switching tube in second switch pipe unit corresponding to switching tube delayed 1/6 switch periods in the first switching tube unit.
Interleaved control technology can reduce output electric current, voltage ripple, reduces input and output filter inductance, electric capacity volume simultaneously, improves the dynamic property of whole system.
Claims (3)
1. one kind inputs the half-bridge converter that Parallel opertation is in parallel, it is characterized in that, including power supply (1), electric capacity brachium pontis (2), switching tube brachium pontis (3), transformer module (4), commutation diode module (5), filter inductance module (6), filter capacitor module (7) and load (8)；
Described power supply (1), electric capacity brachium pontis (2), switching tube brachium pontis (3), transformer module (4), commutation diode module (5), filter inductance module (6), filter capacitor module (7) and load (8) are sequentially connected；
Described electric capacity brachium pontis includes two electric capacity connected, the first electric capacity C1With the second electric capacity C2, electric capacity brachium pontis is parallel to the two ends of power supply (1)；
Described switching tube brachium pontis includes three groups of switching tube unit being connected in parallel on electric capacity brachium pontis two ends, the respectively first switching tube unit, second switch pipe unit and the 3rd switching tube unit, and often group switching tube unit includes two switching tubes connected；
Described transformer module includes three transformators, and in an input of each transformator and a switching tube unit, the series connection point of the switching tube of two series connection is connected, and another input of transformator is connected with the series connection point of the electric capacity of two series connection in electric capacity brachium pontis；
Described filter inductance module includes three filter inductances；
Described commutation diode module includes three groups of commutation diode unit, often group commutation diode unit includes two commutation diodes, the positive pole of two diodes is connected with two outfans of a transformator respectively, and the negative pole of two diodes is all connected with a filter inductance；
Described filter capacitor module includes the filter capacitor C of series connectionfWith filter resistance Rc, the two ends of described filter capacitor module are parallel between the secondary midpoint of each transformator in described transformer module and described filter inductance；
Described load is parallel to the two ends of described filter capacitor module.
Half-bridge converter the most according to claim 1, it is characterised in that described switching tube is metal-oxide-semiconductor.
3. the sharing control system inputting Parallel opertation half-bridge converter in parallel, it is characterised in that include voltage control loop, current regulator, PWM signal generator and drive circuit；
Described voltage control loop, current regulator, PWM signal generator and drive circuit are sequentially connected；
Described current regulator includes three sub-current regulators, and described PWM signal generator includes three sub-PWM signal generator, and described drive circuit includes three sub-drive circuits；
The reference voltage input terminal of the outfan of described voltage control loop and three sub-current regulators is connected；
Each electron current controls the outfan of ring and is connected with a sub-PWM signal generator and a sub-drive circuit successively；
Described sub-drive circuit drives a switching tube unit in a kind of switching tube brachium pontis inputted in the half-bridge converter that Parallel opertation is in parallel described in claim 1；
The voltage output end that the input of described voltage control loop inputs with a kind of described in claim 1 in load in the half-bridge converter that Parallel opertation is in parallel is connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620224358.7U CN205725460U (en) | 2016-03-22 | 2016-03-22 | A kind of half-bridge converter inputting Parallel opertation parallel connection and sharing control system thereof |
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| CN201620224358.7U CN205725460U (en) | 2016-03-22 | 2016-03-22 | A kind of half-bridge converter inputting Parallel opertation parallel connection and sharing control system thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703626A (en) * | 2016-03-22 | 2016-06-22 | 国家电网公司 | Input-parallel output-parallel half-bridge converter and current-sharing control system and method thereof |
| CN107681912A (en) * | 2017-10-30 | 2018-02-09 | 西南交通大学 | The equalizer circuit and its method for equalizing voltage of a kind of five-level converter |
| CN114900055A (en) * | 2022-07-12 | 2022-08-12 | 深圳核心医疗科技有限公司 | Wireless charging rectification circuit and wireless charging device |
-
2016
- 2016-03-22 CN CN201620224358.7U patent/CN205725460U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703626A (en) * | 2016-03-22 | 2016-06-22 | 国家电网公司 | Input-parallel output-parallel half-bridge converter and current-sharing control system and method thereof |
| CN107681912A (en) * | 2017-10-30 | 2018-02-09 | 西南交通大学 | The equalizer circuit and its method for equalizing voltage of a kind of five-level converter |
| CN107681912B (en) * | 2017-10-30 | 2023-09-29 | 西南交通大学 | Voltage equalizing circuit of five-level converter and voltage equalizing method thereof |
| CN114900055A (en) * | 2022-07-12 | 2022-08-12 | 深圳核心医疗科技有限公司 | Wireless charging rectification circuit and wireless charging device |
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